Productivity of species in cassava/maize/okra/ egusi melon complex mixtures in Nigeria

Comparative effects of a tree crop (cocoa) and shifting cultivation on a forest soil in Nigeria

“…The studies on the effects of tree crops on soil (Tinker, 1963;Areola, 1984;Aweto, 1987;Chude, 1988) have been carried out independently of those on the effects of the cultivation of food crops (Obigbesan and Amalu, 1985;Njoku and Odurukwe, 1987;Aweto, 1988;Ikeorgu et al, 1989). Mainly on account of this, it is difficult to compare the effects of tree crops and the annual/biennial crops.…”

Growth and Yield Performance of Cassava/Maize Intercrop Under Different Plant Population Density of Maize

“…In humid tropics, maize is traditionally grown in intercrop with cassava (Agboola & Fayemi, 1971;Fagbamiye, 1977;Ikeorgu et al, 1984). In Nigeria, cassava and maize are the prominent crops in intercropping practices and have been widely studied (Ezumah et al, 1980).…”

Vegetable Production in Traditional Farming Systems in Nigeria

“…Inclusion of melon in a cassava or maize based cropping system appears to be an effective means of suppressing weeds, reducing fluctuations in soil temperature, conserving soil moisture within the root zone and increasing leaf water status and yields (Ikeorgu etal.,1989a;Olasantan, 1988;Wahua, 1985).Studies on the effects of inclusion of either or both okra and melon on gross economic yields and total land productivity of a cassava/ maize-plus-vegetable mixture showed that tuber yield of cassava in cassava/ maize/okra, cassava/maize/melon and cassava/maize/okra/melon did not differ significantly from that in cassava/ maize. Maize grain yield was not depressed by intercropping with the vegetables but the economic yields of intercropped okra and melon were reduced by more than 50% of their respective sole crop yields (Ikeorgu et al, 1989b). From these studies, it may be concluded that inclusion of vegetables in staple mixtures does not necessarily depress the yields of the associated staple food crops.…”